1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 #include <sys/types.h> 30 #include <sys/serengeti.h> 31 #include <sys/errno.h> 32 #include <sys/systm.h> 33 #include <sys/cmn_err.h> 34 35 /* 36 * When an ECC error occurs on an E$ DIMM, the error handling code requests a 37 * unum to provide a human-readable physical location to the part that 38 * experienced the error. 39 * 40 * Previously, on Serengeti and LW8, a prom call was made to get this 41 * information. However, calling COBP to do a simple string format is 42 * inefficient. All the necessary information is now kept here. 43 * 44 * Since this data is now kept in two places (COBP and here), care must be 45 * taken so that the two locations are kept the same. Any changes to the 46 * jnumber array will require a change to COBP code so that the two arrays 47 * match. Any changes to the unum string format will require changes in both 48 * the COBP code (to match the code here) and plat_ecc_unum.c (to read the 49 * new format). These changes should not be necessary, except to reflect a 50 * new cpu or board type. 51 */ 52 53 /* 54 * The following array holds the jnumbers for Ecache DIMMs. The first index 55 * is the proc position on the board (0 through 3) and the second index is 56 * the DIMM number (0 or 1). 57 */ 58 static int sg_j_number[SG_MAX_CMPS_PER_BD][SG_NUM_ECACHE_DIMMS_PER_CPU] = { 59 { 4400, 4300 }, 60 { 5400, 5300 }, 61 { 6400, 6300 }, 62 { 7400, 7300 } 63 }; 64 65 /* 66 * Generate the unum for the specified cpuid and physical address. Put the 67 * unum in buf, which is of size buflen. Return the length of the string in 68 * lenp. 69 * 70 * Return 0 if successful, and an error number otherwise. 71 */ 72 int 73 sg_get_ecacheunum(int cpuid, uint64_t physaddr, char *buf, uint_t buflen, 74 int *lenp) 75 { 76 int node = SG_PORTID_TO_NODEID(cpuid); 77 int board = SG_CPU_BD_PORTID_TO_BD_NUM(cpuid); 78 int proc = SG_PORTID_TO_CPU_POSN(cpuid); 79 int dimm = (physaddr & SG_ECACHE_DIMM_MASK) >> SG_ECACHE_DIMM_SHIFT; 80 81 /* 82 * node and dimm will always be valid. board and proc may be -1 if 83 * an invalid cpuid is passed in. 84 */ 85 if ((board == -1) || (proc == -1)) { 86 return (EINVAL); 87 } 88 89 *lenp = snprintf(buf, buflen, "/N%d/SB%d/P%d/E%d J%d", 90 node, board, proc, dimm, sg_j_number[proc][dimm]); 91 92 return (0); 93 } 94